04140357 is referenced by 25 patents and cites 2 patents.

A hinge for use with a swinging door provided with an electric lock or other electrically operated device or component therein in which the hinge is provided with chases and hollow hinge barrels sheathing a tubular collar which also serves as a hinge pin and provides a continuous passageway through the hinge for electrical conductors in order to maintain a continuous circuit or circuits through the hinge regardless of the position of the door. Each hinge leaf includes a barrel integral therewith with the barrel and leaf being a one-piece casting. The barrels completely enclose the tubular collar which forms a hollow hinge pin and protects the electrical conductors from attack in the event the leaves and barrels are pried apart.

Title
Electric hinge
Application Number
5/865323
Publication Number
4140357
Application Date
December 28, 1977
Publication Date
February 20, 1979
Inventor
Raymond V Kambic
Joliet
IL, US
Lawrence D Butts
Joliet
IL, US
Francis T Wolz
Joliet
IL, US
Agent
Harvey B Jacobson
Clarence A O Brien
Assignee
Folger Adam Co Division of Telkee
IL, US
IPC
H01R 39/00
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